User guide

Interaction with Other Features Configuring Automatic Fabric
page 14-22 OmniSwitch AOS Release 7 Switch Management Guide March 2015
Upon writing the automatically discovered configuration to the configuration file and rebooting, the
automatically discovered link aggregate will become a manually configured link aggregate.
SPB
• If there are any BVLANs manually configured that are not in the range of 4000-4015, SPB discovery
will not run.
• If there are any standard VLAN IDs configured in the 4000-4015 range, SPB discovery will not run.
• SPB automatic discovery occurs after Virtual Chassis setup and LACP discovery.
• All ports or Automatic Fabric link aggregates will be considered SPB network ports. An SPB network
port can be a single port or a link aggregate of ports. IS-IS IIH (Hello) PDUs will be sent out on all
ports to discover SPB-aware devices. SPB will not operate if LACP aborts discovery for any reason.
• At the end of the SPB discovery period, all ports that do not have adjacencies will no longer be
considered network (backbone facing) ports and will not be used by ISIS-SPB or become members of
the default BVLAN IDs created by Automatic Fabric.
• When a port that is enabled for automatic discovery has its first link up event or a new link aggregate is
formed, SPB will attempt to form an adjacency. If no adjacency is found after four Hello time periods,
the port will not be treated as an SPB backbone port, unless manually configured.
• If at least one SPB adjacency is formed on the switch, an attempt will be made to convert ports that are
not part of the adjacency to UNP SPB access ports.
Virtual Chassis
• Automatic Fabric cannot be used to create a VFL for a Virtual Chassis.
• Automatic Fabric will only run after the Virtual Chassis setup is complete.
VRF
• Automatic IP protocol configuration is supported and will start in any max profile VRFs. Up to 64 max
profiles are allowed.
• Automatic IP protocol configuration is not supported in low profile VRFs. This is due to the fact that
low profiles do not support any routing protocols.
UNP Dynamic SAPs
• A Service Access Point (SAP) is dynamically created for ports that are automatically converted to UNP
SPB access ports through the SPB discovery and configuration process.
• The SAP associated with the first port that joins a link aggregate is applied to the link aggregate.
• When an Automatic Fabric port is converted to a UNP SPB access port and the discovered
configuration is saved, the access port configuration is not written to the boot file unless traffic is
detected on that port.